Pollen analysis

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Description:
Analysis of the distribution of pollen grains of various species contained in surface layer deposits, especially peat bogs and lake sediments, from which a record of past climate may be inferred. Because the lake sediments accumulate over time, a core of the mud will show that the mud at the bottom will be the oldest and the mud at the top will be the newest. By separating the samples of the core, we can get a record of how the vegetation around that site has changed. This has shown us that the area around the Great Lakes was tundra 11,000 years ago.For more details, please see the Palynology entry.

History

Modern pollen analysis dates back to Lennart von Post when he presented a paper on fossil pollen grains in Swedish bogs to the 1916 Scandinavian Scientist Conference in Oslo. The paper was repeated in the same year in Stockholm but was not fully published until 1918. Antecedents of this work can be traced in the writings of scientists such as Früh (1885), who enumerated most of the common tree pollen types, together with a considerable number of spores and herb pollen grains. In a study of bottom samples from Swedish lakes by Trybom...
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